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Understanding Radiochemistry Testing and The 2016 TNI Standard - Alpha Spectrometry


This course will provide participants with a general understanding of the theory behind the radioanalytical techniques used to perform alpha spectrometric measurements of uranium in ASTM Method D3972, Standard Test Method for Isotopic Uranium in Water by Radiochemistry, and Standard Methods 7500-U C, Isotopic Method. A mixture of theory-lecture and interactive exercises using real laboratory data examples will help participants understand how analytical processes translate into actions, results, and records that one might encounter in a typical radioanalytical laboratory. It will also address typical challenges that may be encountered. This class will be of benefit both to radiochemistry laboratorians and radiochemistry assessors/ABs.

Topics addressed will include:

  • Method scope, application, and limitations
  • Radioactive decay;
  • Radiochemical preparation;
  • Chemical separation of actinides
  • Sample test source preparation;
  • Alpha spectrometer set-up, performance checks, efficiency and cross-talk calibrations, and background determinations;
  • Calculation and reporting of results and associated statistics (i.e., counting uncertainty vs. combined uncertainty, critical level vs. minimum detectable concentration vs. SDWA Detection Limit, chemical yield);
  • Common problems and challenges encountered with these methods;
  • TNI Standard Volume 1, Module 6 requirements as they relate to the two methods.

Expected Learning Outcomes:
Students will complete the course with an understanding of:

  • The general principles behind the two methods including:
    • Scope and application;
    • The role of radioactive decay in the two methods;
    • Chemical separation and purification of actinides;
    • Preparation of the sample test source;
    • General principles behind alpha spectrometry;
    • Set-up, quality control and calibration requirements for alpha spectrometers;
    • Background determinations for alpha spectrometers.
    • A general familiarity with the calculations of activity concentration for the two methods.

  • And how V1M6 requirements relate to the:
    • Method scope, application, and limitations;
    • Method validation;
    • Instrument controls: Instrument set-up, calibration, and performance checks;
    • Sample specific controls:
    • Sample measurements;
    • Batch quality controls;
    • Reviewing and reporting results.

Course Fee:
$195 for TNI members and $220 for non-members; $595 group rate for 5 or more students.

TNI Members: you must belogged-into the website to receive the member rate.

Note:Each purchased webcast is to be viewed by only one student. If you would like multiple viewers, separate purchases must be made. A group rate of $595 is available for groups of 5 or more students at a single location. Click hereto purchase this webcast at the group rate.

About Webcasts:
Upon receipt of your payment, you will receive a special link by e-mail to watch the webcast on your computer. The link is time-limited: you will have full access to the webcast and any associated handouts for 6 months after receipt of payment, at which time the link will expire. Webcasts cannot be downloaded; they are intended for viewing on your computer only during the 6-month window. If you have any questions, please contact Ilona Taunton

No certificates are provided with webcasts. An additional $15 per person will be charged for anyone who desires a Certificate of Attendance (CoA) or Certificate of Completion (CoC) for the course. A passing score of 2/3 must be received on the Quiz in order to receive CEUs and a CoC. Contact Ilona Taunton atilona.taunton@nelac-institute.organd provide a copy of your course receipt, date of course completion after you have completed the class and copy of your completed quiz.


9 hours

This course has been reviewed and approved by TNI.

Presented By:

TNI Radiochemistry Expert Committee

About the Presenter:
The mission of this committee is to maintain the radiochemistry standard (TNI Environmental Sector Volume 1, Module 6) based on public input; to provide technical assistance on issues related to radiochemistry; and, to develop tools that facilitate the implementation of the standard.